Besides the recent trend of civic participation the debate of the future of urban living is in generally left in the hands of professional architects and city planners. With our installation Ideal Spaces at this year’s Biennale di Venezia–15th International Architecture Exhibition we wanted to provide the possibility for the visitors to participate. We have, therefore, developed a natural, haptic and easy-to-use interface for creating real-time 3D-visualisations of one’s imagined ideal urban spaces. Providing a widespread, haptic interface is crucial for the experience. It does not only foster the visitors to act as a temporary community to co-create the space they want to live in, but immerse the user deeper into the designed space.